1 /*
2 * ecp.c - PPP Encryption Control Protocol.
3 *
4 * Copyright (c) 2002 Google, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The name(s) of the authors of this software must not be used to
20 * endorse or promote products derived from this software without
21 * prior written permission.
22 *
23 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
24 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
25 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
26 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
27 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
28 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
29 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
30 *
31 * Derived from ccp.c, which is:
32 *
33 * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 *
42 * 2. The name(s) of the authors of this software must not be used to
43 * endorse or promote products derived from this software without
44 * prior written permission.
45 *
46 * 3. Redistributions of any form whatsoever must retain the following
47 * acknowledgment:
48 * "This product includes software developed by Paul Mackerras
49 * <paulus@samba.org>".
50 *
51 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
52 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
53 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
54 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
55 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
56 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
57 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
58 */
59
60 #include "netif/ppp/ppp_opts.h"
61 #if PPP_SUPPORT && ECP_SUPPORT /* don't build if not configured for use in lwipopts.h */
62
63 #include <string.h>
64
65 #include "netif/ppp/ppp_impl.h"
66
67 #include "netif/ppp/fsm.h"
68 #include "netif/ppp/ecp.h"
69
70 #if PPP_OPTIONS
71 static option_t ecp_option_list[] = {
72 { "noecp", o_bool, &ecp_protent.enabled_flag,
73 "Disable ECP negotiation" },
74 { "-ecp", o_bool, &ecp_protent.enabled_flag,
75 "Disable ECP negotiation", OPT_ALIAS },
76
77 { NULL }
78 };
79 #endif /* PPP_OPTIONS */
80
81 /*
82 * Protocol entry points from main code.
83 */
84 static void ecp_init (int unit);
85 /*
86 static void ecp_open (int unit);
87 static void ecp_close (int unit, char *);
88 static void ecp_lowerup (int unit);
89 static void ecp_lowerdown (int);
90 static void ecp_input (int unit, u_char *pkt, int len);
91 static void ecp_protrej (int unit);
92 */
93 #if PRINTPKT_SUPPORT
94 static int ecp_printpkt (const u_char *pkt, int len,
95 void (*printer) (void *, char *, ...),
96 void *arg);
97 #endif /* PRINTPKT_SUPPORT */
98 /*
99 static void ecp_datainput (int unit, u_char *pkt, int len);
100 */
101
102 const struct protent ecp_protent = {
103 PPP_ECP,
104 ecp_init,
105 NULL, /* ecp_input, */
106 NULL, /* ecp_protrej, */
107 NULL, /* ecp_lowerup, */
108 NULL, /* ecp_lowerdown, */
109 NULL, /* ecp_open, */
110 NULL, /* ecp_close, */
111 #if PRINTPKT_SUPPORT
112 ecp_printpkt,
113 #endif /* PRINTPKT_SUPPORT */
114 #if PPP_DATAINPUT
115 NULL, /* ecp_datainput, */
116 #endif /* PPP_DATAINPUT */
117 #if PRINTPKT_SUPPORT
118 "ECP",
119 "Encrypted",
120 #endif /* PRINTPKT_SUPPORT */
121 #if PPP_OPTIONS
122 ecp_option_list,
123 NULL,
124 #endif /* PPP_OPTIONS */
125 #if DEMAND_SUPPORT
126 NULL,
127 NULL
128 #endif /* DEMAND_SUPPORT */
129 };
130
131 fsm ecp_fsm[NUM_PPP];
132 ecp_options ecp_wantoptions[NUM_PPP]; /* what to request the peer to use */
133 ecp_options ecp_gotoptions[NUM_PPP]; /* what the peer agreed to do */
134 ecp_options ecp_allowoptions[NUM_PPP]; /* what we'll agree to do */
135 ecp_options ecp_hisoptions[NUM_PPP]; /* what we agreed to do */
136
137 static const fsm_callbacks ecp_callbacks = {
138 NULL, /* ecp_resetci, */
139 NULL, /* ecp_cilen, */
140 NULL, /* ecp_addci, */
141 NULL, /* ecp_ackci, */
142 NULL, /* ecp_nakci, */
143 NULL, /* ecp_rejci, */
144 NULL, /* ecp_reqci, */
145 NULL, /* ecp_up, */
146 NULL, /* ecp_down, */
147 NULL,
148 NULL,
149 NULL,
150 NULL,
151 NULL, /* ecp_extcode, */
152 "ECP"
153 };
154
155 /*
156 * ecp_init - initialize ECP.
157 */
158 static void
ecp_init(unit)159 ecp_init(unit)
160 int unit;
161 {
162 fsm *f = &ecp_fsm[unit];
163
164 f->unit = unit;
165 f->protocol = PPP_ECP;
166 f->callbacks = &ecp_callbacks;
167 fsm_init(f);
168
169 #if 0 /* Not necessary, everything is cleared in ppp_new() */
170 memset(&ecp_wantoptions[unit], 0, sizeof(ecp_options));
171 memset(&ecp_gotoptions[unit], 0, sizeof(ecp_options));
172 memset(&ecp_allowoptions[unit], 0, sizeof(ecp_options));
173 memset(&ecp_hisoptions[unit], 0, sizeof(ecp_options));
174 #endif /* 0 */
175
176 }
177
178
179 #if PRINTPKT_SUPPORT
180 static int
ecp_printpkt(p,plen,printer,arg)181 ecp_printpkt(p, plen, printer, arg)
182 const u_char *p;
183 int plen;
184 void (*printer) (void *, char *, ...);
185 void *arg;
186 {
187 return 0;
188 }
189 #endif /* PRINTPKT_SUPPORT */
190
191 #endif /* PPP_SUPPORT && ECP_SUPPORT */
192